solve the equation and check the answer
a)5z+1/3=7
b)5x/3+3=x+7
Answers
Answered by
1
Answer:
a) 5z + 1/3 = 7
(15z + 1) / 3 = 7
15 z + 1 = 7 * 3
15 z + 1 = 21
15 z = 21 - 1
15 z = 20
z = 20 / 15 = 4/3
z = 4/3
b) 5x/3 + 3 = x + 7
5x + 9 / 3 = x + 7
5x + 9 = 3 (x + 7)
5x + 9 = 3x + 21
5x - 3x = 21 - 9
2x = 12
x = 12/2 = 6
x = 6
Step-by-step explanation:
Answered by
8
Answer:
z=4
x=6
Step-by-step explanation:
(a) 5z+1/3=7
=>5z+1=21
=>5z=20
=>z=4
therefore value of z is 4
Now lets check the answer:
put z=4 in the above equation,
L.H.S
=5(4)+1/3
=20+1/3
=21/3
=7 =R.H.S
so this is verified
(b)5x/3+3=x+7
=>5x/3=x+7-3
=>5x/3=x+4
=>5x=3x+12
=>5x-3x=12
=>2x=12
=>x=6
Now lets check the answer:
put x=6 in the above equation,
L.H.S R.H.S
=5(6)/3 + 3 =x+7
=30/3 + 3 =13
=10 + 3
=13
Therefore L.H.S=R.H.S
So this is verified
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